Description: A quasi-experimental study is a research design that seeks to evaluate the effect of an intervention without the random assignment of participants to treatment and control groups. Unlike traditional experimental studies, where subjects are randomly assigned, quasi-experimental studies use pre-existing groups or natural conditions to observe the effects of an intervention. This approach is particularly useful in situations where randomization is not ethical or practical, such as in public health or education studies. The main characteristics of quasi-experimental studies include group comparison, measurement of outcomes before and after the intervention, and control of external variables that may influence the results. Although these studies may be less rigorous than randomized experiments, they provide valuable insights in contexts where direct manipulation of variables is not possible. In various fields of research, this type of study can be used to evaluate the impact of interventions or treatments in specific populations, allowing researchers to draw meaningful conclusions about the effectiveness of such techniques in real-world conditions.
